As I touched on in previous response, DFIT test is intended to obtain information about breakdown pressures for the formation in question and more importantly the permeability of the formation in question - with the assumption that the tested section at the toe of the lateral is representative of the overall formation covered by the lateral.

This is basically an "ultra mini frac" where a few perforations are shot and then subjected to a pump in of fluid. Then well is shut in and pressures are recorded to see how quickly the induced high pressure created by the mini frac bleeds off (or is absorbed into the formation).

I have attached a Halliburton PDF that explains this a lot better than I can.

Why is this done? Knowing perm of the reservoir interval is helpful in understanding formation response over time as well as how to more properly frac the well. This is an expensive process but worthwhile to do in early wells in any new play area.

Thx RM, your input and education for the non-oil/Gas population is appreciated! I’m pretty sure Keith Mauck didn’t intend for it to become a soundboard/mouthpiece of leftist liberals expressing their “Green New Deal” opinions! It’s the reason seasoned/experienced ppl very rarely respond anymore!! If the shoe fits , WEAR IT!!!

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